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首页> 外文期刊>International journal of engine research >An experimental study to assess the potential of homogeneous charge compression ignition diesel combustion with various fuels for light-duty engines
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An experimental study to assess the potential of homogeneous charge compression ignition diesel combustion with various fuels for light-duty engines

机译：评估轻载发动机用各种燃料进行均质充量压缩点火柴油燃烧的潜力的实验研究

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Single-cylinder engine tests were carried out to assess the potential of homogeneous charge compression ignition (HCCI) diesel combustion compared to the conventional heterogeneous operation mode. For the experiments a single-cylinder engine with a cylinder volume of 0.421 litre was used. Besides the comparison of conventional operation and HCCI operation of the same engine special emphasis was put on the utilization of synthetic fuels such as gas-to-liquid (GtL) or biomass-to-liquid (BtL) fuels. Therefore, in addition to a standard winter diesel, a fuel with mid-sized n-alkanes and mixtures of n-alkanes and aromatic hydrocarbons was used to investigate the influence of different ignitabilities and boiling curves on the combustion. A great advantage of synthetic fuels is the possibility to design them according to the combustion process requirements. In addition, these GtL or BtL fuels will lead to a higher independence from fossil fuels. To assess the potential of HCCI combustion compared to conventional diesel combustion the engine must have the capability to run in both modes. While using the different fuels several engine operation parameters like injection timing and splitting were varied in order to obtain information about their effect on combustion as well as on engine out-emissions. Furthermore, full-load curves for the different fuels were identified to find out where HCCI operation can be applied in an engine map.
机译：进行了单缸发动机测试，以评估与传统的非均质运行模式相比，均质充量压缩点火（HCCI）柴油燃烧的潜力。为了进行实验，使用了气缸容积为0.421升的单缸发动机。除了比较传统发动机和同一发动机的HCCI操作外，还特别强调了对合成燃料的利用，例如气液（GtL）或生物质液（BtL）燃料。因此，除了标准的冬季柴油外，还使用具有中等大小正构烷烃以及正构烷烃和芳烃的混合物的燃料来研究不同可燃性和沸腾曲线对燃烧的影响。合成燃料的一大优点是可以根据燃烧过程的要求进行设计。另外，这些GtL或BtL燃料将导致其与化石燃料的独立性更高。为了评估HCCI燃烧与传统柴油燃烧相比的潜力，发动机必须具有在两种模式下运行的能力。在使用不同的燃料时，要改变几个发动机的运行参数，例如喷射正时和分流，以获得有关它们对燃烧以及发动机尾气排放的影响的信息。此外，确定了不同燃料的满负荷曲线，以找出可以在发动机图中应用HCCI的地方。

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